Pl. cell. aph. 2. THALASSIOPHY TA. 61. Sphzroc. 369 
vy. stellatus. Segments very numerous; tips finely di- 
vided. 
0. fimbriatus. Segments fringed. 
Fucus fimbriatus, Huds. Fl, Angl. 574, 
Fucus ceranoides 5, Light. Scot. 916. 
s. latifolius. Segments membranaceous, nearly orbicular, 
‘many-cut, palmate; lobes short; ¢7p rounded. s 
g- roseus. Thallus simple; tip expanded, oblong, simple. 
11. Spherococeus Brodici. Brodie’s roundfrutt. 
Thallus bottom threadshape, round, branched; tip ex- 
panded, oblong, simple or forked; edge proliferous; iu- 
lercles spherical, sessile or nearly sessile on the tip of the 
segments. ; 
Fucus Brodizi, Turn. Hist. 72; Engl. Bot. 1966. 
Fucus membranifolius, Lamour. Ess. 21. 
Delesseria Brodiwi, Lamour, Thal. 37. 
Spherococeus Brodivi, Agardh Disp. 27. 
Sea-shores; perennial; March. 
Thallus aggregate; tubercles solitary or in pairs. 
12. Spherococcus palmatus. Palmlike roundfrutt. 
Thallus round at bottom, mostly simple; ¢7p expanded, 
‘wedgeshape, palmated; tubercles hemispherical, sessile, 
mostly on the edge of the lobes. 
‘Fucus Palmetta, Hsper, 40; Turn. Hist. 73; Engl. Bot. 1120, not of 
Gmelin, 
Fucus Palmetta 6, Lamour. Essai, 19: 
elesseria Palmetta, Lamour. Thal. 
Sphzrococcus Palmetta, 4gardh Disp. 16, 
Sea-shores, on stones or marine plants. 
Thallus 2 or 3 inches long; edge not in the least cut: 
tubercles superficial, without interwoven fibres. 
B. bifidus. Thallus simple; tip, expanded, wedgeshape, 
simple or 2-cut. | 
Fucus bifidus, Huds, Fl. Angl. 581. 
y- crassiusculus. Thallus linear, much and irregularly 
divided; ¢ip pointed. 
6. linearis. Thallus linear; segments long, simple or 
forked; i7p rounded. 
13. Spherececcus bifidus. Two-cut roundfruit. 
Thallus flat, membranaceous, linear, forked’; segments 
divaricating; edges here and there united together by very 
VOL, I. 2B 
